mirror of
https://github.com/python/cpython.git
synced 2025-10-31 21:51:50 +00:00
64 lines
1.2 KiB
Python
64 lines
1.2 KiB
Python
# A generic class to build line-oriented command interpreters
|
|
|
|
import string
|
|
import sys
|
|
import linecache
|
|
|
|
PROMPT = '(Cmd) '
|
|
IDENTCHARS = string.letters + string.digits + '_'
|
|
|
|
class Cmd:
|
|
|
|
def init(self):
|
|
self.prompt = PROMPT
|
|
self.identchars = IDENTCHARS
|
|
self.lastcmd = ''
|
|
return self
|
|
|
|
def cmdloop(self):
|
|
stop = None
|
|
while not stop:
|
|
try:
|
|
line = raw_input(self.prompt)
|
|
except EOFError:
|
|
line = 'EOF'
|
|
stop = self.onecmd(line)
|
|
|
|
def onecmd(self, line):
|
|
line = string.strip(line)
|
|
if not line:
|
|
line = self.lastcmd
|
|
else:
|
|
self.lastcmd = line
|
|
i, n = 0, len(line)
|
|
while i < n and line[i] in self.identchars: i = i+1
|
|
cmd, arg = line[:i], string.strip(line[i:])
|
|
if cmd == '':
|
|
return self.default(line)
|
|
else:
|
|
try:
|
|
func = eval('self.do_' + cmd)
|
|
except AttributeError:
|
|
return self.default(line)
|
|
return func(arg)
|
|
|
|
def default(self, line):
|
|
print '*** Unknown syntax:', line
|
|
|
|
def do_help(self, arg):
|
|
if arg:
|
|
# XXX check arg syntax
|
|
try:
|
|
func = eval('self.help_' + arg)
|
|
except:
|
|
print '*** No help on', `arg`
|
|
return
|
|
func()
|
|
else:
|
|
import getattr
|
|
names = getattr.dir(self)
|
|
cmds = []
|
|
for name in names:
|
|
if name[:3] == 'do_':
|
|
cmds.append(name[3:])
|
|
print cmds
|